What are the factors that affect the quality of pipette tips for medical laboratory biological consumables?

　　Medical laboratory biological consumable tips are used with pipettes, and are mainly used in various pipetting scenarios. Because in the laboratory, the pipetting of liquid is the basic operation of all experiments, so the pipette and its matching tips are the most commonly used consumable products in the laboratory. In order to meet various pipetting needs, its types are also rich and varied.

　　What are the factors affecting the quality of laboratory pipette tips?

　　1. Material

　　At present, the suction heads on the market are basically made of polypropylene plastic (a colorless and transparent plastic with high chemical inertness and a wide temperature range). High-quality tips are generally made from natural polypropylene, while inexpensive tips are likely to be made from recycled polypropylene plastic.

　　2. Additives

　　In addition, most tips will add a small amount of additives during the manufacturing process. The common ones are: color-developing materials, used for blue tips and yellow tips; additives, to help the tips quickly separate from the mold after forming. Additive for surface treatment of low adsorption pipette tips.

　　The more additives there are, the higher the probability of unwelcome chemical reactions occurring during the pipetting process, but no additives have higher requirements on the production process, which few manufacturers can achieve.

　　3. Biological contamination

　　More and more users will require tips to be free of RNase, DNase, pyrogen and ATP pollution, and endotoxin. However, high-temperature sterilized tips cannot completely guarantee that there is no biological contamination. To ensure that there is no biological contamination, steps such as gamma ray treatment are required. Therefore, it is almost impossible for users to process ordinary tips into non-biologically contaminated tips by themselves, and the purchased non-biologically contaminated boxed tips must provide corresponding certificates, indicating the test data of the corresponding items.